Hi all,
documentation for SA Debug Server Attaching Connector here:
https://docs.oracle.com/javase/8/docs/technotes/guides/jpda/conninv.html#Connectors
states that the SADebugServer has to run on the same vm version as the
debugee process, but "the debugger does not have to be the same bit size
and version."
However any attempts to connect from another version fail with
sun.jvm.hotspot.runtime.VMVersionMismatchException.
Please help, what do I do wrong (locally for simplicity):
- start the debugee process with jdk1.8.0_162 - get the PID
- start "jdk1.8.0_162\bin>jsadebugd.exe PID" - all starts well
- trying to attach jstack, jdb or whatever from another version:
jdk1.8.0_152\bin>jstack localhost
Attaching to remote server localhost, please wait...
Error attaching to remote server:
sun.jvm.hotspot.runtime.VMVersionMismatchException: Supported versions
are 25.152-b16. Target VM is 25.162-b12
sun.jvm.hotspot.debugger.DebuggerException:
sun.jvm.hotspot.runtime.VMVersionMismatchException: Supported versions
are 25.152-b16. Target VM is 25.162-b12
jdk1.8.0_152\bin>jdb -connect
"sun.jvm.hotspot.jdi.SADebugServerAttachingConnector:debugServerName=localhost"
java.io.IOException
at
sun.jvm.hotspot.jdi.SADebugServerAttachingConnector.attach(SADebugServerAttachingConnector.java:106)
at
com.sun.tools.example.debug.tty.VMConnection.attachTarget(VMConnection.java:519)
at
com.sun.tools.example.debug.tty.VMConnection.open(VMConnection.java:328)
at com.sun.tools.example.debug.tty.Env.init(Env.java:63)
at com.sun.tools.example.debug.tty.TTY.main(TTY.java:1082)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
sun.jvm.hotspot.jdi.SADebugServerAttachingConnector.createVirtualMachine(SADebugServerAttachingConnector.java:72)
at
sun.jvm.hotspot.jdi.SADebugServerAttachingConnector.attach(SADebugServerAttachingConnector.java:91)
... 4 more
Caused by: sun.jvm.hotspot.debugger.DebuggerException:
sun.jvm.hotspot.runtime.VMVersionMismatchException: Supported versions
are 25.152-b16. Target VM is 25.162-b12
at sun.jvm.hotspot.HotSpotAgent.setupVM(HotSpotAgent.java:435)
at sun.jvm.hotspot.HotSpotAgent.go(HotSpotAgent.java:305)
at sun.jvm.hotspot.HotSpotAgent.attach(HotSpotAgent.java:183)
at
sun.jvm.hotspot.jdi.VirtualMachineImpl.createVirtualMachineForServer(VirtualMachineImpl.java:241)
... 10 more
Caused by: sun.jvm.hotspot.runtime.VMVersionMismatchException: Supported
versions are 25.152-b16. Target VM is 25.162-b12
at sun.jvm.hotspot.runtime.VM.checkVMVersion(VM.java:227)
at sun.jvm.hotspot.runtime.VM.<init>(VM.java:294)
at sun.jvm.hotspot.runtime.VM.initialize(VM.java:370)
at sun.jvm.hotspot.HotSpotAgent.setupVM(HotSpotAgent.java:431)
... 13 more
Thanks!
--
Egor Ushakov
Software Developer
JetBrains
http://www.jetbrains.com
The Drive to Develop
